I don't think everyone is saying he is the longest. I think he's probably swinging the hardest as a percentage of maximal effort and not holding back, which is fun to watch. He may also be the longest in terms of carry yardage but not in total distance after roll. He also takes aggressive lines off the tee.
I think it's great what he's doing and he's must watch TV in my books and when he's off, he looks like a typical 10 handicapper, which is also fun to watch. He seems sincere and is doing things his own way and this is fun and interesting too.